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White Sox outright Simon Castro to Class AAA Charlotte

Castro, 25, appeared in four games with the White Sox in 2013, going 0-1 with a 2.70 ERA (2 ER/6.2 IP) and six strikeouts. He made his major-league debut on July 5 at Tampa Bay, throwing 3.0 scoreless IP in relief with four strikeouts.

Castro went 3-7 with a 5.83 ERA (60 ER/92.2 IP) and 82 strikeouts over 27 appearances (12 starts) with Charlotte.